Is it okay if I put a layer of pebbles at the bottom and after that a layer of white sand? Or should I go all sand all the way.

Thanks. Good day.

Marci99205

01-03-2012 12:52 PM

Wouldn't the sand eventually work it's way below the pebbles?

Byron

01-03-2012 01:41 PM

Yes. Gravity and the normal movement of water through the substrate will cause the smallest particles to be on the bottom and the largest on top. Which is why i never recommend different particle-sized substrates. All sand is best, or all gravel, depending upon the look you are after and of course any needs of the fish (substrate fish in particular).

Also, I would not use white sand. Fish feel less threatened over a darker substrate.